Iron Fist was a resident of the Domain of Apocalypse who was sent to the Shield for going AWOL from his domain. On one of Iron Fist's first days, his partner and trainer, the Punisher of Egyptia discovered an Ultron Sentinel on the north side of the Shield. Curious about how that Ultron ended up there, the Punisher shot it, disabling it slightly, then went down from the Shield to investigate. Iron Fist was able to destroy the Ultron easily, which led the Punisher to believe it was modified. They decided to inspect a hole next to the Shield and discovered that the Mole Man of Technopolis had been modifying and using Ultrons to build his underground kingdom there. It was then that the Ultrons went rogue and started to attack them, but they were able to destroy them all. The Punisher allowed the Mole Man to go back to his kingdom, while he and Iron Fist returned to their post, watching over both sides of the Shield should something alike happen again.